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基于预检校的数码相机自检校研究
供稿: 徐丽华;谢东海;江万寿 时间: 2019-05-20 次数:

作者:徐丽华;谢东海;江万寿

作者单位:武汉大学测绘遥感信息工程国家重点实验室

摘要:针对定焦数码像机提出一种基于预检校的自检校方法.理论和实验表明,基于Kruppa方程的自检校方法考虑全部的内方位元素,解算的结果不稳定,同时,这种方法没有考虑畸变参数,也影响了内方位元素的精度.一般地,当主距变化时,定焦镜头的内部光学结构不变.根据这个特点,利用预检校找到内方位元素的变换规律,可以减少自检校的参数,并引入畸变参数,从而提高自检校解算的稳定性和精度.

基金:国家自然基金项目(40001018).;

关键词:数码相机预检校;自检校;Kruppa方程;

DOI:10.16186/j.cnki.1673-9787.2005.01.014

分类号:TB852.1

Self-Calibration based on Pre-calibration

Abstract:A calibration method is proposed which solves the Kruppa Equations based on the precalibration. As is known, the solutions to selfcalibration based on Kruppa Equations are not robust. Meanwhile, the distortion parameters are ignored in traditional selfcalibration as well. Because the interior parameters of focusfixed digital camera are wellregulated, some interior parameters can be fixed and the distortion parameters can also be determined with precalibraion, improving the robustness and the precision.

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